Improvement in cultivators



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@dimmi tatrr-f Letters .Patent-No. 86,170, :lated Janna/ry 26, 1869.

IMPROVEMENT IN CULTIVATORS.

The Schedule referred to in these Letters Patent and making part of the same.A

To all whom it may concern:

Beit knownthat I, THOMAS J AoKsoN MARTIN, of Willow Hill, in the county of Jasper, and State of Illinois, have invented a new4 and useful Improvement in Oultivators; and I do hereby declare the following to be a full, clear, and exact description thereof, reference being had to the accompanying drawings, which arev made a part of this specitication, and in which-- Figure l is a top view or plan.

Figure 2 is a longitudinal vertical section on the line a b, iig. l.

Figure 3 is an elevation of a detached portion, showing the locking-arrangement for maintaining the adjustment of distance between the handles of the mid die plows.

Figure 4 is a detached view, showing the connection between the plow-beam and the rock-bar which raises it.

Figure 5 is a detached. perspective view of part of one of the inner plow-beams, showing the device by which the lateral adjustment of the said beams is secured.

The machine is adapted to straddle a row of corn, or other plants, and has two plows travelling on each side of the row. '4

The inner pair is capable of four adjustments First, to be locked at a regulated distance apart.

Secondly, to be separately adjustable, relatively to the row.

Thirdly, to oscillate in unison at a regulated distance `relatively to cach other, or independently, as they are moved by the hands of the operator in following the sinuosities of the row.

Fourthly, to be raised vertically, to vary the depth of furrow, or to be entirely withdrawn from the ground, and maintained at such elevation by bars brought into action by pedals.

The outer plows have also capacity for 'our adjustments:

First, to maintain a regulated distance on each side ofthe median line of the machine; or,

Secondly, to be oscillated laterally, separately or simultaneously, by an impulse from the feet of the operator applied to pedals.

Thirdly, to be raised from the ground, separately or simultaneously, and either with or Without raising the middle plow, with which each is allied by position.

Fourthly, to be locked in an elevated position when the machine is to be turned, or in travelling.

By these capacities for adjustment, the lateral position or'l each plow on either side may be regulated independently ofthe others, or the whole may be swayed in unison and further, the depth of either or all may be determined at will; or, a certain tiredness of relative distance' between the inner plows may be secured, or of the outer plows relative to the median line.

I believe I have herein secured a greater variety of adjustments than can othe'rwhere be found in machines for this purpose,

In the drawings- The tongneA and the quadrangular frame Bare secured to cach other, and to the axle C, which has two wheels, DI).

Secured by clevises to the 'are four plows, E E, F F.

The former pair is adapted to run vnext to the row of plants, and is governed by handles, ff.

This pair oi' plows may be locked at a'ccrtainy distance apart, by means of the hinged rod a on one handle, and the hinged sleeve b on the other handle. The rod slips in and through the sleeve as the handles are moved to and from each other, but the slipping-bar may be locked in position by a spring-latch, c, on one of the handles, when it is desired to maintain the said inner plows at a certain distance apart.

The standards of these plows are connected by linkbars G G to the fra-inc.

The outerplows F F, orthose nearest to the wheels, are also attached by clevises tothe forward transverse beam of the frame, and the be im of each plow rests upon its separate crank-bar H, to which it is secured by a staple, h, beneath the beam, and studs t' beneath the crank-bar, limiting the lateral play of the beam, as seen in the detached view, hg. 4.

The standard of each plow F is connected, by arod,

I, to a rock-bar, J, which is moved Aby a treadle, K, through the intervention of a rod, L.

The rod I has two lingers, which embrace the standard of the plow, and permit it to rise vertically when adjusted by the means to be described.

XVhen, however, it is desired to set the plows F at a certain distance from the median line of the machine the vertical and perforated bar M, beneath the rear end ofthe treadle, is locked, by a pin passing through the arm N, so that no motion can be given to the rock` bar J. This plate has several perforations, and the choice of holes determines the distance of the plow from the,

median line. Y

rI he laterally-adjusting device described, is duplicated on the other side, and they are capable of separate adjustment, so that one plow may be set at any required position, and the other be'free for lateral oscillation, by pressure on the pedal..

The outer plows F are raised by independent devices, which maybe simultaneously or separately brought into action.

Each ofthe crank-bars H, upon which the plow-beams F are rested, has, proj ecting from its axis, a treadle, O, whereby the said crank is lifted, bringing it and the plow into the position shown in red lines in iig. 2. Either or both of the outer plows may be thus elevated without ad'eeting the work oi' the middle plows.

may be retained in an elevated position by engaging the front bar of the machine hookP'of each plow over the bar H. This engagement prevents the downward oscillation of the said bar, and

holds both plows on that sdeiin an elevated position,

while the machine is being turned at the end of a row or being moved to or from the el'd.

I have thus shown that the middle plows may be setat a regulated distance apart, or left free to be sepa'- rately adjusted .laterally by the hands ofitlie operator, may be moved laterally in unison, or independently, may be raised separately, or together, and may be held in their elevated-position; that the outer plows may be' adjusted at a regulated distance from the median line, or be separately adjusted laterally by pressure on their respective pedals, one side being set, if 'required,'and

Vthe other adjustable; that they maybe raised separately, or together, either withor without aieeting the vertical position of the inner plows, either-or both g and that the outer plows may be locked, in elevated position,by the engagement of the hooks in the rear of the standards of the middle plows with the. crank-bar by which the outer plows are lifted.

The seat is supported on the rear portion of the frame, as usual.

Having described my invention, What I claim as new, and desire tosecure by Letters Patent, is-

1-. The arrangement of the plow F and crank-bar II, treadle 0, armed rock-bar J, arms I L, and treadle -described and represented.

3. The arrangement ofthe beam rook-bar J, and plow-standard E, substantially as described. A

THOMAS J AOKSON MARTIN Witnesses:

H. W; WHITE, SOLOMON BOATMAN. 

